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(cba:news) xmmu J1151-62 (Joe Patterson) [2013-05-07T07:25:29Z]


Hi (southern) CBAers,

Cancel the nightly coverage on this peculiar star - likely a nova in 2008 (though with most of its eruption probably occurring while hiding in the solar glare). We found a strong period of 0.3604 d in 2010, when the star was at V=13.9. Now it has faded by about 1 mag... and that signal (probably Porb) is gone. Much to my surprise and chagrin. One can dream up a scheme to explain it - decline of the supersoft source - but whether that's right or not, quien sabe?

Anyway it's not a good target to pursue. It waffles around between 16.0 and 14.7, slowly and without a discernible pattern - despite good coverage from Josch and Berto. Not a winner. On to other stars!

joe